131355907 has 4 divisors (see below), whose sum is σ = 133018720. Its totient is φ = 129693096.

The previous prime is 131355899. The next prime is 131355941. The reversal of 131355907 is 709553131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709553131 = 7 ⋅101364733.

It is a cyclic number.

It is not a de Polignac number, because 131355907 - 2³ = 131355899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131355977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831288 + ... + 831445.

It is an arithmetic number, because the mean of its divisors is an integer number (33254680).

Almost surely, 2^131355907 is an apocalyptic number.

131355907 is a deficient number, since it is larger than the sum of its proper divisors (1662813).

131355907 is an equidigital number, since it uses as much as digits as its factorization.

131355907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662812.

The product of its (nonzero) digits is 14175, while the sum is 34.

The square root of 131355907 is about 11461.0604657684. The cubic root of 131355907 is about 508.3348318030.

The spelling of 131355907 in words is "one hundred thirty-one million, three hundred fifty-five thousand, nine hundred seven".